renderer: minor fixups to uv calcs

[vaxerski]

Should fix, or improve, #11374

needs testing @constantitus @aphelei

[aphelei]

I don't see any difference

before

before_patch.mp4

after

after_patch.mp4

[vaxerski]

do you have expand_undersized_textures enabled?

[aphelei]

do you have expand_undersized_textures enabled?

oop I've disabled it yesterday when testing if it changed something and I forgot reenabling it

[aphelei]

2025-08-07_20-08-1754590784.mp4

sorry for the mic forgot to disable it

[vaxerski]

nice mic bro

anyways looks smooth to me?

[aphelei]

it's my laptop

output2.mp4

resizing diagonally is smooth but not resizing vertically it's weird

horizontally is also ok

[Kam1k4dze]

Main:

main.mp4

PR:

with_patch.mp4

[vaxerski]

fixed, try now

[Kam1k4dze]

Fixed. Overall resizing is less jittery, but in some cases it still jitters.

fixed.webm

[vaxerski]

ya cant please some people swear to god

[aphelei]

resizing is ok but when tiling/floating a window it's worse. Is it a regression ?

after :

output.mp4

before :

output.mp4

[constantitus]

resize.mp4

@vaxerski seems like nothing changed

[vaxerski]

@aphelei its literally the same

@constantitus enable expand undersized textures I'm tired of repeating this

[aphelei]

@aphelei its literally the same

here it's more visible. There are white lines when the window becomes a floating window

2025-08-08_20-08-1754677935.mp4

[constantitus]

@constantitus enable expand undersized textures I'm tired of repeating this

I already told you it was not disabled. I even specifically enabled it and it does the same thing.

[vaxerski]

@aphelei thats normal and it would happen before too, it's just likely quite seemingly random as it depends on the specific rendering of your fm

[vaxerski]

@constantitus idk then your pc bad

[constantitus]

@constantitus idk then your pc bad

It's a ryzen 9 5950x, 64 gigs of ram and an rx 5700 xt. Not the greatest but still above average compared to what most people run Hyprland on.
Also xfce4 wayland, which is in it's testing phase, does resize smoothly.

[vaxerski]

well idk I can't reproduce the stretching anymore

[gulafaran]

@constantitus idk then your pc bad

It's a ryzen 9 5950x, 64 gigs of ram and an rx 5700 xt. Not the greatest but still above average compared to what most people run Hyprland on. Also xfce4 wayland, which is in it's testing phase, does resize smoothly.

that does look a lot like dolphin, if you want you can test #11216

[constantitus]

@constantitus idk then your pc bad

It's a ryzen 9 5950x, 64 gigs of ram and an rx 5700 xt. Not the greatest but still above average compared to what most people run Hyprland on. Also xfce4 wayland, which is in it's testing phase, does resize smoothly.

that does look a lot like dolphin, if you want you can test #11216

Tried, nothing changed. File manager is Thunar btw.
Also, issues are def unrelated. I am noticing this issue even on simple opengl apps.

simple ass opengl app

All this app does is redraw everything every frame and swap buffers. It does not submit individual damage regions to wayland.

2025-08-09.01-51-51.mp4

[constantitus]

Now I realize, not only is the jittery resize issue is not fixed, but now I'm also noticing the issue mentioned by @aphelei where the image kind of gets sucked towards the edge when you shrink the window

I'm 100% sure this issue wasn't there before (in Hyprland 0.49). Guess I should have never opened that discussion.

[vaxerski]

that is normal, you can't prevent stretching without doing something to that. If you disable expand undersized textures, if during resize the app is behind, it will be stretched. Otherwise, it's expanded like this. Some compositors will literally leave empty space which looks the worst imo

[aphelei]

@aphelei its literally the same

here it's more visible. There are white lines when the window becomes a floating window
2025-08-08_20-08-1754677935.mp4

with #11770 it's perfect

2025-09-21_21-09-1758484712.mp4